Change currency on the page

gistfile1.txt

let _myCountry = localStorage.getItem("_myCountry");
let _myExchange = localStorage.getItem("exchange");
let _myExchangePair = localStorage.getItem("exchangePair");
let store_language = "english";
let nowCurr = store_currency.trim();

var hours = 72;
var now = new Date().getTime();
var setupTime = localStorage.getItem("setupTime");
if (setupTime == null) {
    localStorage.setItem("setupTime", now);
} else {
    if (now - setupTime > hours * 60 * 60 * 1000) {
        localStorage.setItem("exchange", "");
        _myExchange = null;
        localStorage.setItem("setupTime", now);
    }
}

const currencyCountryCodes = {
    "SA": {
        "english": "SAR",
        "arabic": "ريال سعودي"
    },
    "US": {
        "english": "USD",
        "arabic": "دولار أمريكي"
    },
    "KW": {
        "english": "KWD",
        "arabic": "د.ك"
    },
    "BH": {
        "english": "BHD",
        "arabic": "دينار بحريني"
    },
    "OM": {
        "english": "OMR",
        "arabic": "ريال عماني"
    },
    "EU": {
        "english": "EUR",
        "arabic": "يورو"
    },
    "GB": {
        "english": "GBP",
        "arabic": "جنيه إسترليني"
    },
    "EG": {
        "english": "EGP",
        "arabic": "جنيه مصري"
    },
    "TR": {
        "english": "TRY",
        "arabic": "ليرة تركية"
    },
    "CA": {
        "english": "CAD",
        "arabic": "دولار كندي"
    },
    "AU": {
        "english": "AUD",
        "arabic": "دولار أسترالي"
    },
    "JO": {
        "english": "JOD",
        "arabic": "دينار أردني"
    },
    "QA": {
        "english": "QAR",
        "arabic": "ريال قطري"
    },
    "MY": {
        "english": "MYR",
        "arabic": "رينغيت ماليزي"
    },
    "SE": {
        "english": "SEK",
        "arabic": "كرونا سويدية"
    },
    "PK": {
        "english": "PKR",
        "arabic": "روبية باكستانية"
    },
    "AE": {
        "english": "AED",
        "arabic": "دإ‏"
    }
};


function setExchangeRate(pair, rate) {
    _myExchange = rate;
    localStorage.setItem("exchange", rate);
    _myExchangePair = pair;
    localStorage.setItem("exchangePair", pair);
}
function setCountry(country) {
    localStorage.setItem("_myCountry", country);
    _myCountry = country;
}

function updatePrices() {
    let rate = 1;
    if (!_myExchange) return;
    rate = Number.parseFloat(_myExchange);
    nowCurr = currencyCountryCodes[_myCountry].english;
    $("body *").each(function () {
        if (!$(this).clone()
            .children()
            .remove()
            .end()
            .text()
            .match(/((\d{1,3},)+)*(\d{1,3})(\.\d{2,3})/))
            return;

        const reg = /((\d{1,3},)+)*(\d{1,3})(\.\d{2})/;
        const num = reg.exec($(this).text());
        const newPrice = ((Number.parseFloat(num[0].replaceAll(",", ""))) * rate).toFixed(2);
        $(this).text(currencyCountryCodes[_myCountry][store_language] + " " + newPrice);
    })
}

function selectedCountryDisplay() {
    let currencyText = "Currency";
    if (store_language == "arabic")
        currencyText = "العملة";
    $(".country-text").children().first().text(currencyText);
    $(".country-text").children().last().text(currencyCountryCodes[_myCountry][store_language]);
    $("img[alt='currency-country-active']").attr("src", `https://media.zid.store/static/${_myCountry.toLowerCase()}.svg`);
    $("button[id='destinationCountry']").text(currencyCountryCodes[_myCountry][store_language]);
}

if (!_myCountry || _myCountry == null)
    $.get("https://ipinfo.io", function (response) {
        _myCountry = response.country;
    }, "jsonp");

function load() {
    for (const codes of Object.keys(currencyCountryCodes)) {
        if (currencyCountryCodes[codes].arabic == nowCurr) {
            store_language = "arabic"
            nowCurr = currencyCountryCodes[codes].english;
        }
    }
    $(document).off("click", ".change-country");
    selectedCountryDisplay();
    $(".dev3-dropdown-menu").empty();
    $(".dev3-dropdown-menu").append($(Object.keys(currencyCountryCodes).map(x =>
        `<li>
    <a href="#" data-code="${x}" class="change-country">
        <img class="menu-icons rounded-circle me-1" src="https://media.zid.store/static/${x.toLowerCase()}.svg"
            width="20" height="20" alt="currency-country">
        ${currencyCountryCodes[x][store_language]}
    </a>
</li>`).join("\n")));
    $("#destinationCountries div").empty();
    $("#destinationCountries div").append($(Object.keys(currencyCountryCodes).map(x =>
        `<span class="change-country" id="${currencyCountryCodes[x].english}" data-code="${x}" onclick="hideAllDestinationsDropDowns();">
${currencyCountryCodes[x][store_language]}
</span>`).join("\n")));
    let currencyText = "Currency";
    if (store_language == "arabic")
        currencyText = "العملة";
    $(".destination-shipping-language").first().text(currencyText);
    $("button[id='destinationCountry']").text(currencyCountryCodes[_myCountry][store_language]);
    $("#modal-select-destination-city-save").replaceWith(`<button id="modal-select-destination-city-save">
    Save
    </button>`);

    $("form[action='/customer/lang-shipping-country']").submit(function (e) {
        e.preventDefault();
        return false;
    });
    $("form[action='/customer/lang-shipping-country']").attr("method", "");
    $("form[action='/customer/lang-shipping-country']").attr("action", "");


    $(document).on("click", "#modal-select-destination-city-save", function () {
        $("#langCurrecyModal").attr("class", "modal fade");
        $("#langCurrecyModal").attr("style", "display: none;");
        $("body").attr("style", "");
        $(".modal-backdrop.fade.show").remove();
    })
    $(document).on("click", ".change-country", function () {
        setCountry($(this).data("code"))
        selectedCountryDisplay();
        checkAndUpdate();
    });
    selectedCountryDisplay();
    checkAndUpdate()
};
load();

function checkAndUpdate() {
    const pair = `${store_currency}/${currencyCountryCodes[_myCountry].english}`;
    if (_myExchangePair == pair && _myExchange) {
        updatePrices();
        return;
    }
    if (Object.keys(currencyCountryCodes).indexOf(_myCountry) > -1) {
        fetch(`https://exchange-bwxvbry5lq-uc.a.run.app/?to=${currencyCountryCodes[_myCountry].english.toUpperCase()}&from=${nowCurr.toUpperCase()}`)
            .then(x => x.json())
            .then(
                function (response) {
                    if (response.message == "Validation error") return;
                    setExchangeRate(pair, response.data[currencyCountryCodes[_myCountry].english].value);
                    updatePrices();
                });
    }
}